expdp备份ORA-ORA-31693/ORA-02354/ORA-00942

expdp备份ORA-ORA-31693/ORA-02354/ORA-00942 问题：expdp日常备份时经常会有下面的报错ORA-31693: Table data object "Chenjch"."VTZMWF8RG89LSV6YXXX" failed to load/unload and is being skipped due to error:ORA-02354: error in exporting/importing dataORA-00942: table or view does not exist 环境：Oracle 11.2.0.1.0 for Windows Server 2012 问题原因：expdp是先导出表结构，然后在导出数据，报错的表都是一些临时堆表，在expdp导出表结构时这些表还存在，但是在导出完表结构到导出数据期间表被删除，导致后面导出数据时报错； 问题重现：构建测试数据，在expdp导出完表结构到导出数据期间手动删除部分表，可以重现；并且通过这次的expdp备份恢复的数据，是存在这些报错的表，只是没有数据；---1 创建测试数据---Oracle 11.2.0.4.0 SQL> create tablespace cjc_tbs datafile '/u01/app/oracle/oradata/orcltest/cjc_tbs01a.dbf' size 10M autoextend on; SQL> create user chenjch identified by a default tablespace cjc_tbs; SQL> grant connect,resource,dba to chenjch; SQL> create directory dir_expdp as '/home/oracle/backup/expdp'; SQL> grant read,write on directory dir_expdp to public; SQL> conn chenjch/a  SQL> create table tt1 as select level as id from dual connect by level <=10; SQL> create table tt2 as select level as id from dual connect by level <=10; SQL> create table tt3 as select level as id from dual connect by level <=10; SQL> create table tt4 as select level as id from dual connect by level <=10; SQL> create table tt5 as select level as id from dual connect by level <=10; SQL>  declare begin   for i in 1 .. 10000000 loop     insert into tt5 values (i);     commit;   end loop; end; ---2 expdp导出数据库，问题重现 SQL> create directory dir_expdp as 'D:\data'; SQL> grant read,write on directory dir_expdp to public; [oracle@svnhost expdp]$ expdp chenjch/a directory=dir_expdp dumpfile=chenjch_20180927.dmp logfile=chenjch_20180927.log schemas=chenjch Export: Release 11.2.0.4.0 - Production on Thu Sep 27 16:30:28 2018 Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options Starting "CHENJCH"."SYS_EXPORT_SCHEMA_01":  chenjch/******** directory=dir_expdp dumpfile=chenjch_20180927.dmp logfile=chenjch_20180927.log schemas=chenjch  Estimate in progress using BLOCKS method... Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA Total estimation using BLOCKS method: 120.2 MB Processing object type SCHEMA_EXPORT/USER Processing object type SCHEMA_EXPORT/SYSTEM_GRANT Processing object type SCHEMA_EXPORT/ROLE_GRANT Processing object type SCHEMA_EXPORT/DEFAULT_ROLE Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA Processing object type SCHEMA_EXPORT/TABLE/TABLE    ---导出表结构后可以马上执行删除表进行测试(删除表tt1,tt2,tt3) Processing object type SCHEMA_EXPORT/TABLE/COMMENT Processing object type SCHEMA_EXPORT/TABLE/INDEX/INDEX Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/CONSTRAINT Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS . . exported "CHENJCH"."TT5"                             94.31 MB 10000010 rows ORA-31693: Table data object "CHENJCH"."TT1" failed to load/unload and is being skipped due to error:  ---问题重现  ORA-02354: error in exporting/importing data ORA-39826: Direct path load of view or synonym (CHENJCH.TT1) could not be resolved. ORA-31693: Table data object "CHENJCH"."TT2" failed to load/unload and is being skipped due to error: ORA-02354: error in exporting/importing data ORA-39826: Direct path load of view or synonym (CHENJCH.TT2) could not be resolved. ORA-31693: Table data object "CHENJCH"."TT3" failed to load/unload and is being skipped due to error: ORA-02354: error in exporting/importing data ORA-39826: Direct path load of view or synonym (CHENJCH.TT3) could not be resolved. . . exported "CHENJCH"."TT4"                             5.070 KB      10 rows Master table "CHENJCH"."SYS_EXPORT_SCHEMA_01" successfully loaded/unloaded ****************************************************************************** Dump file set for CHENJCH.SYS_EXPORT_SCHEMA_01 is:   /home/oracle/backup/expdp/chenjch_20180927.dmp Job "CHENJCH"."SYS_EXPORT_SCHEMA_01" completed with 3 error(s) at Thu Sep 27 16:30:44 2018 elapsed 0 00:00:15 ---3 导入数据进行测试 SQL> create user chenjch1 identified by a default tablespace cjc_tbs; SQL> grant connect,resource,dba to chenjch; [oracle@svnhost expdp]$ impdp chenjch/a directory=dir_expdp dumpfile=chenjch_20180927.dmp logfile=chenjch_impdp_20180927.log remap_schema=chenjch:chenjch1 Import: Release 11.2.0.4.0 - Production on Thu Sep 27 17:06:33 2018 Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options Master table "CHENJCH"."SYS_IMPORT_FULL_01" successfully loaded/unloaded Starting "CHENJCH"."SYS_IMPORT_FULL_01":  chenjch/******** directory=dir_expdp dumpfile=chenjch_20180927.dmp logfile=chenjch_impdp_20180927.log remap_schema=chenjch:chenjch1  Processing object type SCHEMA_EXPORT/USER ORA-31684: Object type USER:"CHENJCH1" already exists Processing object type SCHEMA_EXPORT/SYSTEM_GRANT Processing object type SCHEMA_EXPORT/ROLE_GRANT Processing object type SCHEMA_EXPORT/DEFAULT_ROLE Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA Processing object type SCHEMA_EXPORT/TABLE/TABLE Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA . . imported "CHENJCH1"."TT5"                            94.31 MB 10000010 rows . . imported "CHENJCH1"."TT4"                            5.070 KB      10 rows Job "CHENJCH"."SYS_IMPORT_FULL_01" completed with 1 error(s) at Thu Sep 27 17:06:45 2018 elapsed 0 00:00:11 SQL> conn chenjch1/a Connected. SQL> select * from tab; TNAME        TABTYPE CLUSTERID ------------------------------ ------- ---------- TT1        TABLE TT2        TABLE TT3        TABLE TT4        TABLE TT5        TABLE SQL> select * from tt1; no rows selected 欢迎关注我的微信公众号"IT小Chen"，共同学习，共同成长！！！